Abstract
• Cross-sectional area distribution of non-uniform corroded steel bars varies with increasing corrosion rate. • Relative yield strength decreases linearly and relative ultimate elongation decreases exponentially. • Little effect of corrosion on the yield strength and ultimate strength of the steel bars. • Non-uniform corroded steel bars have shorter necking length and tend to brittle failure. In this work, to investigate the characteristics of non-uniform corrosion of steel bars more accurately, a new experimental method was proposed, which can rapidly generate non-uniformly distributed rust around steel bars in concrete. The precise average and critical cross-sectional area along the longitudinal direction of corroded steel bars were then obtained using the three-dimensional (3D) laser scanning. Based on critical section loss rate, the effects of non-uniform corrosion on the degradation of mechanical properties of steel bars were studied. The corrosion morphology, mechanical properties, and tensile failure patterns of uniformly and non-uniformly corroded steel bars were compared and elaborated.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call